From owner-freebsd-stable@freebsd.org Mon Aug 3 08:55:08 2015 Return-Path: Delivered-To: freebsd-stable@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 07C139AFBB9 for ; Mon, 3 Aug 2015 08:55:08 +0000 (UTC) (envelope-from killing@multiplay.co.uk) Received: from mail-wi0-f177.google.com (mail-wi0-f177.google.com [209.85.212.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (Client CN "smtp.gmail.com", Issuer "Google Internet Authority G2" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 7E1341ECB for ; Mon, 3 Aug 2015 08:55:06 +0000 (UTC) (envelope-from killing@multiplay.co.uk) Received: by wibxm9 with SMTP id xm9so111219757wib.0 for ; Mon, 03 Aug 2015 01:54:59 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:subject:to:references:from:message-id:date :user-agent:mime-version:in-reply-to:content-type :content-transfer-encoding; bh=KxDpULnh0X6NvEb68ml+SeOgXbkA2SwZsg1UMcZ25+4=; b=QtIZ4L0fHGzwQQgPhXbYQxwG7R2T8ju6m4sxErH526jJ5sWVyPaSQiaC778RMwMUmj LLlVDuTaOgNEMAmvjxyyI81bNWBxApvaOMcg47+mL8L4Qx0JoLsqKCsJfrcqn16LxL0u H3SJppn2WdGeJo84K0uTn/ECE4zXnDUu8GteUwRjkaA+av+LKNcX9cZTnWNJu1ySrmwM tdmiKihlES+nTJde3RCwznSBSEm4Rwds9EJVlJrtS7UXsq4flNYmP7TCFn5FLZcSMsvJ sVbwtYckmS8/dRgpqxJOwTUDStpOgby2e/y5x/lazHCgPVINicNtqYO/ij3gvsIKI4i5 WYsw== X-Gm-Message-State: ALoCoQkgRRn/ikEocFsclj2crIfAKCCZBR3oaeD2lZg+6TFOx7iohiA/7baQrGPP8ztz+QNd3gqR X-Received: by 10.194.87.102 with SMTP id w6mr30402620wjz.111.1438592099077; Mon, 03 Aug 2015 01:54:59 -0700 (PDT) Received: from [10.10.1.68] (82-69-141-170.dsl.in-addr.zen.co.uk. [82.69.141.170]) by smtp.gmail.com with ESMTPSA id lu5sm21779761wjb.9.2015.08.03.01.54.58 for (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Mon, 03 Aug 2015 01:54:58 -0700 (PDT) Subject: Re: KSTACK_PAGES stuck at 2 despite options KSTACK_PAGES=4 To: freebsd-stable@freebsd.org References: From: Steven Hartland Message-ID: <55BF2C69.6060801@multiplay.co.uk> Date: Mon, 3 Aug 2015 09:55:05 +0100 User-Agent: Mozilla/5.0 (Windows NT 5.1; rv:38.0) Gecko/20100101 Thunderbird/38.1.0 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=windows-1252; format=flowed Content-Transfer-Encoding: 8bit X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 03 Aug 2015 08:55:08 -0000 Thanks for the report Trond, I've reproduced this and am investigating. On 31/07/2015 22:21, Trond Endrestøl wrote: > stable/10, i386, r286139, 4 GiB RAM, custom kernel loudly claims: > > ZFS NOTICE: KSTACK_PAGES is 2 which could result in stack overflow panic! > Please consider adding 'options KSTACK_PAGES=4' to your kernel config > > Well, my custom kernel config does contain: > > options KSTACK_PAGES=4 > > and > > options ZFS > > sysctl kern.conftxt backs up my story: > > kern.conftxt: options CONFIG_AUTOGENERATED > ident VBOX > machine i386 > cpu I686_CPU > cpu I586_CPU > cpu I486_CPU > makeoptions WITH_CTF=1 > makeoptions DEBUG=-g > options ZFS > options KSTACK_PAGES=4 <---- !!!!!! > options FDESCFS > ... > > What more does it want? >